16285-7005 AMM   7AB (Zet TrA)

 
 
16h 28m 27.80s -70 05' 04.8" P.A. 287 sep 6.3 mag 3.66,17.70 Sp F9V dist. 12.12 pc (39.54 l.y.)
 
 
Coord 2000
16285-7005
Discov num
AMM   7
Comp
AB
Coord arcsec 2000
16 28 27.80 -70 05 04.8
Date first
2006
Date last
2006
Obs
1
Pa first
287
Pa last
287
P.A. Now (θ)
287°
Sep first
6.3
Sep last
6.3
Sep. Now (ρ)
6.3"
Mag pri
3.66
Mag sec
17.70
delta mag (ΔM)
14.04
Spectral class
F9V (yellow-white)
Pri motion ra
+200
Sec motion ra
Pri motion dec
+111
Sec motion dec
Notes
K (K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
16285-7005 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Zet TrA 253554 16285-7005 AMM 7 AB 2006 2006 1 287 6.3 3.66 17.70 14.04 Y <===
Show 253554 16285-7005 AMM 7 AC 2006 2006 1 48 8.6 3.66 19.20 15.54
Show 253554 16285-7005 AMM 7 AD 2006 2006 1 23 10.3 3.66 19.50 15.84
Show 253554 16285-7005 AMM 7 AE 2006 2006 1 51 10.4 3.66 16.50 12.84
Show 253554 16285-7005 AMM 7 AF 2006 2006 1 281 11.6 3.66 16.40 12.74
Show 253554 16285-7005 AMM 7 AG 2006 2006 1 29 13.2 3.66 18.50 14.84
Show 253554 16285-7005 AMM 7 AH 2006 2006 1 24 13.7 3.66 17.70 14.04
Show 253554 16285-7005 AMM 7 AI 2004 2006 2 25 15.7 3.66 13.40 9.74
Show 253554 16285-7005 AMM 7 AJ 2006 2006 1 278 16.3 3.66 21.40 17.74
Show 253554 16285-7005 AMM 7 AK 2006 2006 1 36 19.2 3.66 15.10 11.44
11-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
286.7
Precise sep
6.28
Name
Zet TrA
Cdsa2 id
AMM 7 AB
Constellation
Triangulum Australe
SAO
253554
HIP
80686
Tycho2
9278-02951-1
HD
147584
HR
6098
GC
22089
GL
Gl 624
CP
CP-69 2558
Bayer
Zeta Trianguli Australis
Bayer name
Zet TrA
Ra deg
16.47438888888889
De deg
-70.08466666666666
Distance
12.12
Distance ly
39.54
last precise pa
286.7
last precise sep
6.28
 
 
ORBITAL ELEMENTS
 
 
Period (P)12.9d Periastron (T)18103.6d (1908.442y) Semi-major axis (a)2.71m± 0.44
Eccentricity (e)0.06 Inclination (i)16.01°± 2.47 Longitude of periastron (ω)274.5°
Node (Ω)2.1°± 6.8 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1992
label rho theta
2000-01-01 0.003 34.6
2001-01-01 0.003 138.8
2002-01-01 0.002 251.7
2003-01-01 0.003 14.3
2004-01-01 0.003 119.0
2005-01-01 0.003 227.4
2006-01-01 0.003 353.3
2007-01-01 0.003 99.1
2008-01-01 0.003 204.7
2009-01-01 0.003 331.1
2010-01-01 0.003 79.2
2011-01-01 0.003 183.4
2012-01-01 0.002 307.5
2013-01-01 0.003 59.2
2014-01-01 0.003 163.1
2015-01-01 0.002 282.6
2016-01-01 0.003 39.2
2017-01-01 0.003 143.2
2018-01-01 0.002 257.3
2019-01-01 0.003 18.9
2020-01-01 0.003 123.5
2021-01-01 0.003 232.8
2022-01-01 0.003 358.1
2023-01-01 0.003 103.6
2024-01-01 0.003 209.7
2025-01-01 0.003 336.3
2026-01-01 0.003 83.7
2027-01-01 0.003 188.1
2028-01-01 0.003 313.0
2029-01-01 0.003 63.7
2030-01-01 0.003 167.6

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds16285-7005r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16285-7005 AMM 7 AB 2006 1 287 6.3 3.66 17.70 F9V K 162827.80-700504.8

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